Patents by Inventor Thomas H. Pearson

Thomas H. Pearson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Real-time statistical process monitoring system
    Patent number: 5339257
    Abstract: A system for monitoring a multiparameter manufacturing process by examining on a real-time basis a stream of data units, each data unit including a numerical characteristic indicative of a current state of one of the parameters of that manufacturing process and a tag identifying the parameter. The system employs an entity-relational database to group and evaluate all data units using statistical evaluation criteria, and to identify and generate signals relating to particular testpoints in the manufacturing process so that an indication of the significance of the statistical pattern and the manufacturing process parameter involved are given in such terms as to permit human evaluation of and, if necessary, manual or automatic intervention in the manufacturing process.
    Type: Grant
    Filed: May 15, 1991
    Date of Patent: August 16, 1994
    Assignee: Automated Technology Associates Inc.
    Inventors: John E. Layden, David J. Layden, Thomas H. Pearson